I found this script from the article landscape-sysinfo for Centos OS :
#!/bin/bash #Simple motd script for Centos 5/6 #created by Vitalijus Ryzakovas b=`tput bold` n=`tput sgr0` echo "Checking for system updates:" while ps aux | grep -e [y]um > /dev/null; do echo -n .;sleep 1; done & up=`yum -e0 -d0 check-update | awk ''` reset echo -e "$Hostname:$ `hostname` \t\t IP address: `/sbin/ifconfig venet0:0 | grep "inet addr" | awk -F: '' | awk ''`" echo -e "$CPU load:$ `cat /proc/loadavg | cut -d" " -f1-3`" echo -e "$Uptime:$ `uptime | cut -d" " -f 4-7 | cut -d"," -f1-2`" echo -e "Free memorry: `cat /proc/meminfo | grep MemFree | awk {'print int($2/1000)'}` MB \t\t Total memory: `cat /proc/meminfo | grep MemTotal | awk {'print int($2/1000)'}` MB" echo -e "$Available updates:$ `if [[ ! -n "$" ]]; then echo "system up-to-date"; else echo $up; fi`\n" echo -e "Mail quere length: `exim -bpc`" echo -e "Proccess number: `cat /proc/loadavg | cut -d"/" -f2| cut -d" " -f1`\n" echo -e "$Active sessions:$ `w | tail -n +2`" Its result will look like this :
